GTA02 revisions

From Openmoko

This page summarizes the revisions of the GTA02 hardware, both pre-release and planned future revisions.

The internal codename of the Neo FreeRunner was GTA02. Compared to the previous GTA01, it has the same physical dimensions, screen and RAM, but more flash storage, a faster processor, plus wifi and accelerometers. The next major revision is expected to be GTA03.

All Neo FreeRunners that have been released to the public at this time are revision 6. There are a few persons with r5, but they were manually adapted to the state of r6.

USB host power chip have some output voltage stability issues with Vb/Vcc comes from different power source, need layout change to fix the issue

Battery Coulomb design not working on A4

ATAG_REVISION: 0340

GTA02v5

Mass production candidate version 2/Mass production version

First batch fabricate 2008/1/14 at FIC SuZhou

Mass production A5 trial run start from 2008 March, including some resistor/capacitor change compare with inital 100 pcs prototypes A5, and prototypes for GTA02 developers was tracked in the Prototypes Page

Coulomb counter issue fixed

USB host power switch fixed

Need add capacitor for PMU Vbat input for stability issue, this could be done by direct SMT or hand rework

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This page summarizes the revisions of the GTA02 hardware, both pre-release and planned future revisions.

The internal codename of the Neo FreeRunner was GTA02. Compared to the previous GTA01, it has the same physical dimensions, screen and RAM, but more flash storage, a faster processor, plus wifi and accelerometers. The next major revision is expected to be GTA03.

All Neo FreeRunners that have been released to the public at this time are revision 6. There are a few persons with r5, but they were manually adapted to the state of r6.

Estimated time line

TODO: It should be nice if there are some dates next to the milestones (See: To-Do List)

GTA02v3 design finalized - DONE

GTA02v3 power supply flaw found, GTA02v4 needed - DONE

GTA02v4 design finalized - DONE

GTA02v4 small number produced for Openmoko internal developer evaluation - DONE

USB host power chip have some output voltage stability issues with Vb/Vcc comes from different power source, need layout change to fix the issue

Battery Coulomb design not working on A4

ATAG_REVISION: 0340

GTA02v5

Mass production candidate version 2/Mass production version

First batch fabricate 2008/1/14 at FIC SuZhou

Mass production A5 trial run start from 2008 March, including some resistor/capacitor change compare with inital 100 pcs prototypes A5, and prototypes for GTA02 developers was tracked in the Prototypes Page

Coulomb counter issue fixed

USB host power switch fixed

Need add capacitor for PMU Vbat input for stability issue, this could be done by direct SMT or hand rework